Synopsis
Naho Takamiya's first day of her second year of high school gets off to a rough start. After waking up late, she discovers a mysterious letter addressed to her—one that comes from herself ten years in the future. At first, Naho is doubtful, but when the events described in the letter begin to unfold exactly as written, she accepts that it truly came from her 26-year-old self. The letter explains that her future life is full of regrets, and she wants her younger self to correct the mistakes of the past. It also warns her to keep a close eye on the new transfer student, Kakeru Naruse, because he is no longer around in the future. With the letter as her guide, Naho now has the chance to protect Kakeru before she ends up regretting it all over again.
